LIGHT-EMITTING DEVICE COMPRISING METAL COMPLEXES WITH BIPHOSPHININE LIGANDAS

摘要

A light-emitting device comprising: an anode; a cathode; a light emissive layer located between the anode and the cathode, said light emissive layer comprising a metal complex for emitting light; the metal complex comprising the group having general formula I: M-L (I) where M is a metal and L is a ligand, and L comprises Ar which is a substituted or unsubstituted heteroaryl ring; characterised in that the heteroaryl ring contains at least one phosphorous atom.